Growing mechanism of CNTs:: a kinetic approach

被引：97

作者：

Pérez-Cabero, M

Romeo, E

Royo, C

Monzón, A

Guerrero-Ruíz, A

Rodríguez-Ramos, I

机构：

[1] Univ Zaragoza, Fac Ciencias, Dept Ingn Quim & Tecnol Medio Ambiente, E-50009 Zaragoza, Spain

[2] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain

[3] Univ Nacl Educ Distancia, Fac Ciencias, Dept Quim Inorgan & Tecn, Madrid 28040, Spain

来源：

JOURNAL OF CATALYSIS | 2004年 / 224卷 / 01期

关键词：

carbon nanotubes (CNTs); carbon nanofibers (CNFs); acetylene decomposition; CVD; iron catalysts; kinetic modeling; catalyst deactivation;

D O I：

10.1016/j.jcat.2004.03.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A kinetic study of the synthesis of carbon nanotubes (CNTs) by catalytic decomposition of acetylene over an iron-supported catalyst was carried out using a thermobalance. The CNTs were mainly characterized by transmission electron microscopy (TEM and HRTEM). It was found that there is a high influence of the reaction conditions (feed mixture, reaction temperature, etc.) on the final reaction yield and on the structural and morphological characteristics of the carbon products obtained. A complete discussion of the results by comparison of the carbon deposition curves with the TEM images is given. Finally, a kinetic model for explaining the growing mechanism of carbon nanotubes is developed and the displayed conclusions are clearly shown. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：197 / 205

页数：9

共 33 条

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